Troubleshooting - Sharp 550SH User Manual

Troubleshooting

Problem
The phone does not
turn on.
PIN code or PIN2
code is rejected.
The SIM card
becomes locked.
144 Troubleshooting
Solution
• Make sure the battery is
properly inserted and
charged.
• Make sure you have entered
the correct code (4 to 8
digits).
• Your SIM card/protected
functions will become locked
after three unsuccessful
attempts.
• Contact your SIM provider if
you do not have the correct
PIN code.
• Enter the PUK code (8 digits)
provided by your service
provider (if supported).
• If the attempt is successful,
enter the new PIN code and
confirm your phone is
operational again. Otherwise
contact your dealer.
Problem
• Adjust the backlight
The display is
difficult to read. brightness for the display.
• Check the radio signal
strength indicator as you may
be outside the service area.
• Check to see if any error
Phone functions do
message is displayed when
not work after the
phone is turned on.
you turn your phone on. If so,
contact your dealer.
• Make sure the SIM card is
correctly inserted.
• Your current location may not
provide good call quality (i.e.,
in a car or train). Move to a
Call quality is poor.
location where radio signal
strength is greater.
• Make sure you are correctly
subscribed for the Short
Message Service, that the
Cannot send or
network supports this service,
receive text
and that the centre number is
message.
set up correctly. If not, contact
your network service
provider.
Solution